CVE-2025-53599
CVE-2025-53599 is a critical-severity vulnerability in Navercorp Whale with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 0% (30th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19934
- Weakness: CWE-79
- Affected product: Navercorp Whale
- Published:
- Last modified:
Description
Whale browser for iOS before 3.9.1.4206 allow an attacker to execute malicious scripts in the browser via a crafted javascript scheme.
Frequently asked questions
- What is CVE-2025-53599?
- Whale browser for iOS before 3.9.1.4206 allow an attacker to execute malicious scripts in the browser via a crafted javascript scheme.
- How severe is CVE-2025-53599?
- CVE-2025-53599 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-53599 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-53599?
- CVE-2025-53599 affects Navercorp Whale. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-53599?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-53599 have an EU (EUVD) identifier?
- Yes. CVE-2025-53599 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19934.
- When was CVE-2025-53599 published?
- CVE-2025-53599 was published on 2025-07-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:navercorp:whale:*:*:*:*:*:iphone_os:*:*
More vulnerabilities in Navercorp Whale
- CVE-2025-62583 — Critical (CVSS 9.8): Whale Browser before 4.33.325.17 allows an attacker to escape the iframe sandbox in a dual-tab environment.
- CVE-2022-24074 — Critical (CVSS 9.8): Whale Bridge, a default extension in Whale browser before 3.12.129.18, allowed to receive any SendMessage request from…
- CVE-2025-69234 — Critical (CVSS 9.1): Whale browser before 4.35.351.12 allows an attacker to escape the iframe sandbox in a sidebar environment.
- CVE-2018-9859 — High (CVSS 8.1): The path of Whale update service was unquoted in NAVER Whale before 1.0.40.7. This vulnerability can be used for…
- CVE-2018-12449 — High (CVSS 7.8): The Whale browser installer 0.4.3.0 and earlier versions allows DLL hijacking.
- CVE-2017-15913 — High (CVSS 7.8): The Installer in Whale allows DLL hijacking.
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